First version of PerformanceObserver

Source/core/inspector/InspectorInstrumentation.idl

Index: Source/core/inspector/InspectorInstrumentation.idl
diff --git a/Source/core/inspector/InspectorInstrumentation.idl b/Source/core/inspector/InspectorInstrumentation.idl
index ba362489f3f39754c50158dbd975050bab993d02..accb98d821090ce9329eefdc508f5bf79b063cdd 100644
--- a/Source/core/inspector/InspectorInstrumentation.idl
+++ b/Source/core/inspector/InspectorInstrumentation.idl
@@ -168,6 +168,18 @@ interface InspectorInstrumentation {
     void didDeliverMutationRecords(ExecutionContext*);
 
     [AsyncCallTracker, Inline=FastReturn]
+    void didEnqueuePerformanceObserverEntries([Keep] ExecutionContext*, PerformanceObserver*);

[yurys, 2015/08/26 19:17:05]

You don't need all these changes. Use generic methods
InspectorInstrumentation::traceAsync* [1] instead and store asyncOperationId on
PerformanceObserver instance. See for example how it is done in
FileReader.cpp[2]. We only create separate map from domain object to
asyncOperationId when it is impossible to store the operation id on the object
itself (e.g. for performance reason).


[1] 
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

[2]
https://code.google.com/p/chromium/codesearch#chromium/src/out/Debug/gen/blin...

[MikeB, 2015/08/27 18:02:49]

Done.

+
+    [AsyncCallTracker, Inline=FastReturn]
+    void didClearAllPerformanceObservations([Keep] ExecutionContext*, PerformanceObserver*);
+
+    [AsyncCallTracker, Inline=FastReturn]
+    void willDeliverPerformanceObservations([Keep] ExecutionContext*, PerformanceObserver*);
+
+    [AsyncCallTracker, Inline=FastReturn]
+    void didDeliverPerformanceObservations(ExecutionContext*);
+
+    [AsyncCallTracker, Inline=FastReturn]
     void didPostExecutionContextTask([Keep] ExecutionContext*, ExecutionContextTask*);
 
     [AsyncCallTracker, Inline=FastReturn]